(3xy^2)^2+(-xy^3)(4xy)
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(3xy^2)^2+(-xy^3)(4xy)(3xy^2)^2+(-xy^3)(4xy)(3xy^2)^2+(-xy^3)(4xy)(3xy^2)^2+(-xy^3)(4xy)=9x^2y^4-4x^
(3xy^2)^2+(-xy^3)(4xy)
(3xy^2)^2+(-xy^3)(4xy)
(3xy^2)^2+(-xy^3)(4xy)
(3xy^2)^2+(-xy^3)(4xy)=9x^2y^4-4x^2y^4=5x^2y^4
5(x^2)(y^4)
(-3xy+2xy)-(4xy+xy)
3xy-4xy-（-2xy）
3xy-4xy-（-2xy）
3xy(x^2-xy^2+xy)-xy^2(2x^2-xy+2x)
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
（X-3xy+4xy-y）-[-2x-2（xy-3/2xy）-y]+6xy的过程
2x²y-3(2xy-xy)-xy
因式分解X^3-2xy+xy^2
-3(2x^2-xy)+4(x^2+xy-6)
（-3x^y+2xy)-( )=4x^+xy
4(x²+xy-6)-3(2x²-xy)
-3(2x²-xy)+4(x²+xy-6)
化简：3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
一道数学题(3x^2y-4xy^2)/xy
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
3(x^2y+xy)-4(xy-2x^2y)-(-xy)
-3(xy-2x²)-[y²-(5xy-4x²)+2xy]